Urosome conspicuously asymmetrical, genital segment somewhat irregularly dilated 

 in the middle, and without any lateral spines, 2nd segment forming below a sacci- 

 form dilatation turned somewhat to right side, last segment with an irregular dorsal 

 lappet curved to left side. Caudal rami likewise somewhat asymmetrical, the left 

 one being smaller than the right; setse about as in C. inuTfi/icti. Eye present, but 

 very small, sub-ventral. Anterior antennae much shorter than in C. norrcijic/t. when 

 reflexed scarcely reaching beyond the genital segment, and consisting of only 23 

 articulations. Anterior maxillipeds rather large, but with the claw-like spines 

 less strong than in C. norveglca. Apical spine of outer ramus in 2nd to 4th 

 pairs of legs very short, not nearly attaining half the length of the terminal joint. 

 Last pair of legs with the terminal joint much longer than the other 2 combined, 

 and falciform in shape, tapering distally, and terminating in a simple acute point, 

 outer edge with 3 extremely small denticles, one of which is placed at rather a 

 long distance from the other 2, inner edge perfectly smooth. 



Male more slender than female, with the right projection of last segment 

 of metasome slightly larger than left, but scarcely incurved. Urosome without 

 any sacciform dilatation below, genital segment with the projection on right side 

 simple, acuminate. Right anterior antenna with the middle section considerably 

 more tumefied than in C. norreyica, and having at the end anteriorly a very 

 coarsely serrate, dark-coloured lamella. Right last leg terminating in ajsomewhat 

 irregular chela formed by the last 2 joints. 



Colour. Body semipellucid, with a faint yellowish tinge, and exhibiting 

 on the dorsal face of the anterior division a double row of small dark blue patches. 



Length of adult female 2.70 mm., of male about the same. 



Remark*. The above-described form is unquestionably Boeck's Conduce 

 armata. Owing to the imperfect manner in which it was recorded by that author, 

 it was, however, not recognized by subsequent carcinologists, and it has accor- 

 dingly been recorded under the name proposed by Brady several years later, 

 viz., that of Ccnid'tcc' jicctiniitu. It may be observed that, according to Dr. 

 Griesbrecht, the form described under this name from the Challenger Expedition, 

 is a different species, viz., Ciindin-iii mrtn of Dana. From most other species 

 the present form may be easily recognized, at any rate in the female sex, by 

 the peculiar asymmetry of the urosome. 



Occurrence. Boeck did not record the locality where he found this form. 

 Most probably it was Haugesund, west coast of Norway, where he made most of 

 his collections. I have myself taken it occasionally off Mserd0, outside Arendal, 

 and in the lower part of the Christiania Fjord, at Hanko. All the specimens 

 were procured by the aid of the tow-net near the surface of the sea. The same 



